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Brother MFC-J491DW User Manual

Brother MFC-J491DW
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Home > Troubleshooting > If You Are Having Difficulty with Your Machine > Network Problems > My Brother
Machine Cannot Print, Scan, or PC-FAX Receive over the Network
My Brother Machine Cannot Print, Scan, or PC-FAX Receive over the
Network
Cause Action Interface
Your security software
blocks your machine's
access to the network.
(The Network scanning
feature does not work. )
Windows
®
Configure the third-party Security/Firewall Software to allow
Network scanning. To add port 54925 for Network scanning, type
the information below:
- In Name:
Type any description, for example Brother NetScan.
- In Port number:
Type 54925.
- In Protocol:
UDP is selected.
See the instruction manual that came with your third-party
Security/Firewall Software or contact the software manufacturer.
Mac
(Brother iPrint&Scan)
In the Finder menu bar, click Go > Applications, and then double-
click the Brother iPrint&Scan icon. The Brother iPrint&Scan
window appears. Click the Select your Machine button, and then
follow the on-screen instructions to reselect your network machine.
(TWAIN driver)
In the Finder menu bar, click Go > Applications > Brother, and
then double-click the Device Selector icon. The Device Selector
window appears. Reselect your network machine, make sure
Status is idle, and then click OK.
Wired/Wireless
Your security software
blocks your machine's
access to the network.
(The network PC-Fax
Receive feature does not
work.)
(Windows
®
)
Set the third-party Security/Firewall Software to allow PC-FAX Rx. To
add port 54926 for Network PC-FAX Rx, type the information below:
In Name:
Type any description, for example Brother PC-FAX Rx.
In Port number:
Type 54926.
In Protocol:
UDP is selected.
See the instruction manual that came with your third-party Security/
Firewall Software or contact the software manufacturer.
Wired/Wireless
Your security software
blocks your machine's
access to the network.
Some security software might block access without showing a security
alert dialog box even after successful installation.
To allow access, see the instructions for your security software or ask
the software manufacturer.
Wired/Wireless
Your Brother machine was
not assigned an available
IP address.
Confirm the IP address and the Subnet Mask.
Verify that both the IP addresses and Subnet Masks of your
computer and the Brother machine are correct and located on the
same network.
For more information about how to verify the IP address and the
Subnet Mask, ask your network administrator.
Windows
®
Confirm the IP address and the Subnet Mask using the Network
Connection Repair Tool.
Mac
Wired/Wireless
496

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Brother MFC-J491DW Specifications

General IconGeneral
DisplayLCD
Product colorBlack
Built-in displayYes
Display diagonal1.77 \
Market positioningHome & office
Internal memory128 MB
Card reader integratedNo
Sound pressure level (copying)50 dB
Print technologyInkjet
Maximum resolution1200 x 6000 DPI
Duplex printing modeAuto
Print speed (ISO/IEC 24734) mono12 ipm
Print speed (ISO/IEC 24734) color6 ipm
Time to first page (black, normal)8 s
Duplex print speed (ISO/IEC 24734) mono3 ipm
Duplex print speed (ISO/IEC 24734) color1.7 ipm
Print speed (black, normal quality, A4/US Letter)27 ppm
Print speed (color, normal quality, A4/US Letter)10 ppm
Standard interfacesUSB 2.0, Wireless LAN
USB 2.0 ports quantity1
Copier resize25 - 400 %
Maximum copy resolution1200 x 600 DPI
Package depth249 mm
Package width447 mm
Package height457 mm
Package weight10100 g
Power consumption (off)0.2 W
Power consumption (sleep)1 W
Power consumption (standby)3.5 W
Power consumption (printing)16 W
Power consumption (average operating)- W
Sustainability certificatesNordic Swan Ecolabel, ENERGY STAR
FaxingMono faxing
Fax memory170 pages
Modem speed14.4 Kbit/s
Wi-Fi standards802.11b, 802.11g, Wi-Fi 4 (802.11n)
Security algorithms64-bit WEP, 128-bit WEP, WPA-PSK, WPA2-PSK
Mobile printing technologiesApple AirPrint, Mopria Print Service
Paper input typePaper tray
Total input capacity100 sheets
Total output capacity50 sheets
Auto document feeder (ADF) input capacity20 sheets
Paper tray media typesPlain paper
Borderless printing media sizesA4
Scan toE-mail, File, Image, OCR
Scanner typeFlatbed & ADF scanner
Input color depth30 bit
Output color depth24 bit
Maximum scan resolution19200 x 19200 DPI
Optical scanning resolution1200 x 2400 DPI
Digital sender-
Maximum duty cycle- pages per month
Harmonized System (HS) code84433100
Weight and Dimensions IconWeight and Dimensions
Depth341 mm
Width400 mm
Height172 mm

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